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# ... choice = input("Enter choice (1-4): ") num1 = float(input("Enter first number: ")) num2 = float(input("Enter second number: ")) if choice == '1': print(num1, "+", num2, "=", add(num1, num2)) elif choice == '2': print(num1, "-", num2, "=", subtract(num1, num2)) elif choice == '3': print(num1, "*", num2, "=", multiply(num1, num2)) elif choice == '4': print(num1, "/", num2, "=", divide(num1, num2)) else: print("Invalid input.") # ... # Additional code for handling user's desire to continue calculating while True: cont = input("Do you want to perform another calculation? (yes/no): ") if cont.lower() == "no": print("Calculator program ended.") break elif cont.lower() == "yes": choice = input("Enter choice (1-4): ") num1 = float(input("Enter first number: ")) num2 = float(input("Enter second number: ")) if choice == '1': print(num1, "+", num2, "=", add(num1, num2)) elif choice == '2': print(num1, "-", num2, "=", subtract(num1, num2)) elif choice == '3': print(num1, "*", num2, "=", multiply(num1, num2)) elif choice == '4': print(num1, "/", num2, "=", divide(num1, num2)) else: print("Invalid input.") else: print("Invalid input. Please enter 'yes' or 'no'.")
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